private string ValidNewOrder(OrderCreateDto entity, AppUser user)
{
if (entity.Details.Count == 0)
{
return("订单明细不能为空");
}
if (entity.StudentId == 0)
{
return("请指定有效学生");
}
if (entity.Coupon < 0 || entity.Discount < 0 || entity.Discount > 100 || entity.Balance < 0)
{
return("不合法的优惠金额，请检查优惠券、折扣、余额是否是有效参数");
}
if (entity.ClosingCost < 0)
{
return("成交价必须大于等于0");
}
if (entity.ActualPayment < 0)
{
return("实际支付金额不能小于0");
}
if (entity.ActualPayment > 0 && string.IsNullOrWhiteSpace(entity.PaymentMethod))
{
return("支付方式不能为空");
}
return(string.Empty);
}
public Result Create(OrderCreateDto entity, SchoolUser user)
{
string error;
#region 检验 订单
error = ValidNewOrder(entity, user);
if (!string.IsNullOrWhiteSpace(error))
{
return(ResultUtil.Fail(error));
}
#endregion
#region 检验订单明细
error = ValidNewOrderDetails(entity.Details, user);
if (!string.IsNullOrWhiteSpace(error))
{
return(ResultUtil.Fail(error));
}
#endregion
#region 检验订单金额
int originTotal = entity.Details.Sum(i => i.OriginUnitPrice * i.GoodsCount);
int closingCost = entity.Details.Sum(i => i.ClosingUnitPrice * i.GoodsCount);
if (closingCost != entity.ClosingCost)
{
return(ResultUtil.Fail("订单总额与订单明细不匹配"));
}
#endregion
var order = Mapper.Map <OrderEntity>(entity);
order.SchoolId = user.SchoolId;
order.BeforeCreate(user);
List <OrderDetailsEntity> details = new List <OrderDetailsEntity>();
using (var conn = db.GetConnection())
{
conn.Open();
using (var trans = conn.BeginTransaction())
{
try
{
// 创建订单
var orderId = db.Create(order);
// 创建明细
foreach (var detail in entity.Details)
{
var temp = Mapper.Map <OrderDetailsEntity>(detail);
temp.OrderId = orderId;
temp.BeforeCreate(user);
details.Add(temp);
}
db.Create(details);
if (order.ActualPayment > 0)
{
// 创建付款记录
var payment = new PaymentEntity
{
SchoolId = user.SchoolId,
StudentId = entity.StudentId,
StudentName = entity.StudentName,
OrderId = orderId,
PaymentMethod = entity.PaymentMethod,
PaymentAmount = entity.ActualPayment
};
payment.BeforeCreate(user);
db.Create(payment);
}
trans.Commit();
return(ResultUtil.Success());
}
catch (Exception ex)
{
trans.Rollback();
return(ResultUtil.Exception(ex));
}
}
}
}